Method of transmitting position data via cellular communication system

ABSTRACT

A method of transmitting position data via cellular communication system includes the steps of receiving position data from a position data producer such as a GPS, an INS, or a GPS/INS integrated system, attaching the position data to a location registration data stream, and sending the position data along with the location registration data to a base station. This method takes advantages of the existing location updating procedure in a cellular network system to transmit precision position data of a mobile station. It does not need a dialing up to transmit position data. By utilizing this method, the position data of the mobile station can be delivered to the base station or cellular network whenever the mobile station is powered on.

CROSS REFERENCE OF RELATED APPLICATION

[0001] This is a divisional application of a non-provisional applicationhaving an application Ser. No. 09/291,503 and a filing date Apr. 13,1999.

FIELD OF THE PRESENT INVENTION

[0002] The present invention relates generally to a wireless datatransmission method, and more particularly to a wireless locationinformation transmission via cellular communication system such ascellular phone. A position data producer generates position data andpasses to a cellular phone. This cellular phone sends the position datato base station during each location updating procedure.

BACKGROUND OF THE PRESENT INVENTION

[0003] The service area in a cellular communication system is arrangedinto appropriate network of contiguous radio cells. Each cell has a basestation that utilizes an associated set of radio channels to effectivelyconnect to any mobile station located in the cell. The systems uses twotypes of duplex channels. Control channels are used to transfersystem-control data to and from mobiles, and voice channels provide alink for speech or data transmissions and in-call supervisory tones. Thebase stations are connected, via the conventional landline system ormicrowave links, to a mobile switching center (MSC). It is the MSC thatcontrols the connection of the mobiles to each other and to the nationaland international telephone system.

[0004] Because mobile users are always on the move, the mechanisms thatthe networks use to locate each of us within wireless communicationnetworks are important. This is referred to as roaming and call routing.With roaming agreements in place it does not matter where we are. We areconnected and people can find us. We get service and we can make calls.Current mobile communication networks and personal communication systemssupport roaming and call routing described as above. The global systemfor mobile communications (GSM) is one of the examples. Another exampleis the personal communication systems (PCS) 1900. These systems evenhave country roaming capability. When we travel to another country whichhas roaming agreement, we still can get mobile communication services.

[0005] The most important tool used for finding phones within mobilewireless communication networks is location updating. The location of amobile station is uniquely identified by the mobile country code (MCC),the mobile network code (MNC), and the location area identity (LAI). TheMCC is a three-digit value that identifies the country where the networklocated. The MNC is a two-digit value that identifies different networkswithin one country. The LAI identifies the physical area in which amobile station is located. A location area may consist of one or morephysical cells; it is also referred as a paging area, in which a networkdesignates as a mobile station's location for paging tasks.

[0006] With each location updating procedure, the mobile station, suchas a cellular phone as partially shown in FIG. 2, reads its locationfrom the control channel transmitted by its serving base transceiverstation (BTS) 31 and reports it back to the network. In a wirelesscommunication network, two registers store the location-related data ofa mobile station: the home location register (HLR) 34 and the visitorlocation register (VLR) 35. The HLR 34 keeps data that are permanentlyassociated with individual mobile stations as well as the currentlocation. The permanent data include subscription details such as theteleservices, bearer services, and supplementary services allocated tothe subscriber. The VLR 35 keeps temporary data on a subscriber for onlyas long as the subscriber is located in the area belonging to aparticular VLR. The temporary data contains the subscription-relateddata (obtained from the subscriber's HLR) as well as the mobilestation's exact location in the VLR's area. The position data of amobile station is given by the base station controller 32. Theresolution of the location area is the same as the base stationcontrollers (BSCs).

[0007] For example, within a base station controller 32 having acoverage area of 100 square miles, you may determine whether the mobilestation is in this area according to the position data provided by thebase station controller 32. However, there is no way to obtain any exactlocation information from this locate updating procedure.

[0008] On the other hand, although a GPS (Global Positioning System)receiver obtains positioning information from satellites, which isprocessed to provide position data by a position data producer. However,only the user of GPS receiver and position data producer can access suchposition data. Therefore, most of the positioning systems, including theGPS systems and the IMU systems, are merely applied in vehicles such asairplanes and ships. Some mini GPS systems can also be carried byindividuals such as mountain climbers and explorers so as to help themto find out their own exact locations.

[0009] However, if a particular person's position or location must betracked by others for safety or security reason, very accurate andexpensive equipment must be employed to send and receive the positiondata from the particular person. Therefore, only specific people such asthe military officers or government agents can afford such technologyfor special mission. The convenience of positioning information stillcan not be publicly applied and be utilized in our daily lives.

SUMMARY OF THE PRESENT INVENTION

[0010] It is a main objective of the present invention to provide amethod of transmitting position data via cellular communication system,wherein one can obtain the exact location of any particular cellularphone user through the cellulose phone system.

[0011] It is another objective of the present invention to provide amethod of transmitting position data via cellular communication system,so that the cellular phone users can obtain their positions from theircellular phones easily.

[0012] It is another objective of the present invention to provide amethod of transmitting position data via cellular communication system,wherein one can obtain another cellular phone user's location from thebase station of the cellular phone.

[0013] It is another objective of the present invention to provide amethod of transmitting position data via cellular communication system,wherein one can obtain another cellular phone user's location by makingphone call to that cellular phone.

[0014] It is another objective of the present invention to provide amethod of transmitting position data via cellular communication system,wherein non-dialing is required to send out the position data. In fact,the position data of the mobile station (cellular handset) is availableand continuously transmitted to the base station via a cellular handsetwhen the handset is powered on.

[0015] It is another objective of the present invention to provide amethod of transmitting position data via cellular communication system,wherein once the cellular phone of the user is powered on, the cellularphone's position, i.e. the cellular phone user's location, is availableby sending position data to the base station along with each locationupdating procedure of that cellular phone. Moreover, the cellular phoneusers may willfully choose to provide or block their position data.

[0016] It is another objective of the present invention to provide amethod of transmitting position data via cellular communication system,wherein a position data producer is equipped in a mobile station such asa cellular phone for producing position data which is send to the basestation of the cellular communication system during mobile stationlocation updating procedures.

[0017] It is another objective of the present invention to provide amethod of transmitting position data via cellular communication system,wherein the position data generated by Global Positioning System (GPS)receiver can be transmitted via a mobile station such as a cellularphone during mobile station location updating procedures.

[0018] In order to accomplish the above objectives, the presentinvention provides a method of transmitting position data via cellularcommunication system, which comprises the steps of:

[0019] generating a position data by a position data producer;

[0020] sending the position data to a mobile station from the positiondata producer;

[0021] attaching the position data to a location registration datastream which is sent by the mobile station to a base station to informwhich area does the mobile station currently reside in;

[0022] sending the position data along with the location registrationdata stream to the base station from the mobile station; and

[0023] retrieving the position data by the base station.

BRIEF DESCRIPTION OF THE DRAWINGS

[0024]FIG. 1 is a block diagram illustrating the transmission ofposition data generated by a position data producer via cellularnetworks.

[0025]FIG. 2 is a block diagram illustrating the processing steps of acellular handset with a position data producer.

[0026]FIG. 3 is a block diagram illustrating the procedure of mobilestation position access using a regular static phone.

[0027]FIG. 4 is a block diagram illustrating the procedure of mobilestation position access by another mobile station through the same basestation.

[0028]FIG. 5 is a block diagram illustrating the procedure of mobilestation position access by another mobile station through ISDN/PSTN.

[0029]FIG. 6 is a block diagram with a monitoring center, illustratingthe procedure of mobile station position access using a regular staticphone.

[0030]FIG. 7 is a block diagram with a monitoring center, illustratingthe procedure of mobile station position access by another mobilestation through the same base station.

[0031]FIG. 8 is a block diagram with a monitoring center, illustratingthe procedure of mobile station position access by another mobilestation through ISDN/PSTN.

DETAILED DESCRIPTION OF THE PRESENT EMBODIMENT

[0032] Referring to FIGS. 1 to 8, the present invention contrives aneffective approach to continuously transmit the mobile station user'sposition via a cellular handset when the handset is powered on. The mainconcept of the present invention is to transmit the position datagenerated by a position data producer by attaching the position data tothe registration data stream of a mobile station, which seamlesslyperforms location updating procedure when power is on. During thelocation updating procedure the registration data including the mobilestation identification number, the mobile country code (MCC), the mobilenetwork code (MNC), and the location area identity (LAI) are transmittedto the network. Whether the speech occurs or not, this location updatingprocedure is performed periodically through a control channel of thecellular network. By means of the present invention, the base station 30of the network knows the precision position of any mobile station at anytime.

[0033] To process the position data transmission via cellular networkmethod of the present invention, as shown in FIG. 1, a position dataproducer 10 is connected to a mobile station 20 which is connected to abase station 30 of a cellular network via a wireless channel. Thismobile station can be a cellular phone handset which is used to transmituser's precision position generated by the position data producer tobase station 30 periodically. The base station 30 is connected to anISDN (Integrated Services Digital Network) or a PSTN (Public-SwitchedTelephone Network). By this way, the existing ISDN or PSTN can be usedto send the user's precision position data to a remotely monitoringcenter.

[0034] The method of transmitting position data via cellularcommunication system according to the present invention comprises thesteps as follows:

[0035] (1) Send user's position data to a mobile station 20 from aposition data producer 10. The user's position can be in geodetic frameor in ECEF (Earth-Centered-Earth-Fixed) coordinate system. In geodeticframe, the user's position is given in Latitude and Longitude. In ECEFcoordinate system, the user's position is given by three dimensionalcoordinates (x,y,z).

[0036] (2) Receive a mobile station country code, a mobile network code,and a location area identity from a base station 30, wherein acombination of the mobile station country code, the mobile network code,and the location area identity gives the service area in which themobile station 20 currently resides.

[0037] (3) Attach user's position data to the location registration datastream 201 by the mobile station 20. During existing location updatingprocedure in a cellular network system, the location registration datastream 201 is sent by the mobile station 20 to the base station 30 toinform which area does the mobile station 20 currently reside in. Thelocation registration data generally include the identification (ID)number of the mobile station 20, the mobile country code, the mobilenetwork code, and the location area identity.

[0038] (4) Periodically send the user's position data along with thelocation registration data by the mobile station 20 to the base station30. This is a periodical procedure which is called periodic locationupdating in current cellular networks. This step is performed after aperiod of time predefined by the network and constantly sent to allactive mobile stations 20 monitoring the control channel. This step canalso take place whenever the mobile station 20 is powered on. It canalso take place when the mobile station 20 detects a location areachange.

[0039] (5) Retrieve the user's position data by the base station 30 andstore it. The retrieved user's position can be stored in the homelocation register 34 or visitor location register 35. It can also bestored in an independent register.

[0040] (6) Send the user's position data by the base station 30 to theremotely monitoring center via ISDN/PSTN. This is an optional step ofthe present invention. The position information of mobile station can bestored at this remotely monitoring center.

[0041] It is worth to mention that the above step (3) can be disabled.This is realized by setting a functional key on a mobile station 20.

[0042] User's position data can be attached to the head of the locationregistration data. It can also be attached to an end of the locationregistration data, for example, after the mobile country code andtherefore the mobile network code, or after the mobile network code andbefore the location area identification.

[0043] As shown in FIG. 2, a typical mobile station 20 is illustrated,which generally comprises a microphone 21, a speaker 22, a voiceprocessing unit 23 connected with the microphone 21 and the speaker 22,wherein the voice processing unit 23 includes two converters:analog-to-digital converter (ADC) for the analog input signal frommicrophone and digital-to-analog converter (DAC) for the convertedanalog output signal to speaker. The voice processing unit 23 cancontain band-limiting low-pass filters for anti-aliasing in the transmitpath, and waveform reconstruction in the receive path. There are alsosome gain amplifiers for the signals coming from the microphone andsignals that drive the speaker.

[0044] The mobile station 20 further comprises a speech processing unit24 which is connected between the voice processing unit 23 and a signalprocessing unit 25. The signal processing unit 25 is connected with theposition data producer 10 and a baseband processing unit 26. The speechprocessing unit 24 generally contains speech encoder and decoder toencoding the digital voice data from the voice processing unit 23 and torecreate the speech sounds that specified the bits the coder generated.The signal processing unit 25 works with the user data including speechand data traffic, as well as signaling and control information. Themobile station 20 also comprises a radio processing unit 27 which isconnected between the baseband processing unit 26 and a transceiveantenna 28. The transceive antenna is responsible to transmit andreceive signal to or from the base station 30 of cellular networks.

[0045] Referring to FIG. 2, the above step (3) comprises the furthersteps as follows:

[0046] (a) Encode the user's position data during signal processing. Acommon ciphering scheme can be applied to the coded user's positiondata.

[0047] (b) Modulate the coded data including the user's position dataduring signal processing. The modulation scheme can be GMSK(Gaussian-filtered Minimum Shift Keying) modulation.

[0048] (c) Convert the coded data which is registry data stream 201 aswell as user's position data into analog signal. The baseband processingunit 26 contains two digital-to-analog converters (DACs) which deliveranalog baseband in-phase (I) and quadraphase (Q) signals to modulate theradio user.

[0049] (d) Amplify the analog transmit signal by the radio processingunit 27.

[0050] (e) Broadcast the signal from the transceive antenna 28 of themobile station 20 such as a cellular phone handset to a base stationterminal of the base station 30.

[0051] There are three different types of location updating proceduresin current cellular networks. Because the present invention utilizes thelocation updating procedure to transmit the user's precision positiongenerated by the position data producer 10, the position transmissionvia cellular network also has three ways as follows:

[0052] (1) The position data transmission takes place whenever a mobilestation 20 is powered on. After an internal initialization, the mobilestation 20 checks for an available network. When it finds one, themobile station 20 is able to read the location information that includesthe mobile country code (MCC), the mobile network code (MNC), and thelocation area identity (LAI). The mobile station 20 initiates a locationupdate procedure. During this location update procedure, the positiondata generated by the position data producer 10 is transmitted alongwith the MCC, the MNC, and the LAI.

[0053] (2) The position data transmission is performed after a period oftime predefined by the network. In this mode, the position datagenerated by the position data producer 10 is transmitted periodicallyto the base station 30 along with the MCC, the MNC, and the LAI.

[0054] (3) The position data transmission takes place when the mobilestation 20 detects a location area change. In current cellular networks,when the mobile station 20 detects a location area change, it willnotify the network that it is now located in a different area by sendingback the MCC, the MNC, and the LAI to the base station 30, and themobile station's ID as well. During this notification of the locationarea change, the position data generated by the position data producer10 is transmitted to the base station 30 along with the MCC, the MNC,and the LAI.

[0055] The position data producer 10 of the present invention can be aGPS (Global Positioning System) user equipment, comprising a GPSantenna, a signal processing unit, and associated electronics. The GPSuser equipment receives signals from the global positioning systemsatellites to derive position, velocity, and time solution. The globalpositioning system principle of operation is based on rangetriangulation. Because the satellite position is known accurately viaephemeris data, the user can track the satellite's transmitted signaland determine the signal propagation time. Since the signal travels atthe speed of light, the user can calculate the geometrical range to thesatellite. According to these range measurements, the user's positioncan be calculated.

[0056] The position data producer 10 of the present invention can be aninertial navigation system (INS) which comprises an onboard inertialmeasurement unit (IMU), a processor, and embedded navigationsoftware(s). The positioning solution is obtained by numerically solvingNewton's equations of motion using measurements of vehicle specificforces and rotation rates obtained from onboard inertial sensors. Theonboard inertial sensors, including accelerometers and gyros, togetherwith the associated hardware and electronics comprise the inertialmeasurement unit (IMU).

[0057] The position data producer 10 of the present invention can alsobe a GPS/INS integrated system in which GPS user equipment and the INSaid each other to obtain a robust and high precision positioningsolution.

[0058] For some applications where equipment size is not a criticalfactor, for example on a motion vehicle, the position data producer 10of the present invention can be an external device which resides outsidethe mobile station 20. In other applications miniaturization is requiredfor portability, for example for person use, the position data producer10 of the present invention is preferred to be a built-in deviceinstalled inside the mobile station 20.

[0059] For some applications where voice communication is not required,the mobile station 20 of the present invention merely comprises theposition data producer 10, the signal processing unit 25, the basebandprocessing unit 26, the radio processing unit 27, and the transceiveantenna 28. The position data producer 10 is connected to the signalprocessing unit 25. The baseband processing unit 26 is connected betweenthe signal processing unit 25 and the radio processing unit 27. Thetransceive antenna 28 is connected to the radio processing unit 27 toreceive control information from the base station 30 of cellularnetworks and to transmit registration data as well as user's positiondata to base station 30 of the cellular networks.

[0060] In some applications, the user of the mobile station 20 needs toknow the position information about himself or herself. An enhancedmobile station 20 according to the present invention can furtherincludes a display to show the user's position in text format. Thisdisplay is attached to the position data producer 10 or to the signalprocessing unit 25 of the mobile station 20.

[0061] In some applications, a sophisticated navigation function isrequired by the mobile station user. Such enhanced mobile stationaccording to the present invention should include a map database and agraphic display as well. The display can show the user's positiongraphically as well as the map. The combination of the map display andthe user's position tells the user's current location and surroundingfeatures such as buildings, roads and mountains. Also this map can givethe user navigation information and guidance functionality.

[0062] Most of the cellular handsets already has a small screen todisplay telephone number or a short message. The mobile station 20 canbe an enhanced cellular handset according to the present invention,which provides a functional key to access the position displayingfunction. Once the user presses this key, the cellular handset readsposition data from the position data producer 10 and displays it on thesmall screen.

[0063] In plenty of situations, another user of another mobile stationor somebody would want to know the precision position of a specificperson who is the user of the mobile station 20. For example, thesecurity control center would like to monitor all the exact positions ofall the security guards on duty outside. The mobile station 20 accordingto the present invention can be enhanced to provide a specious functionto get the location information of a specific mobile station. The mobilestation user dials the phone number of this specific mobile station andactives this specious function. After building of the connection betweenthe mobile station 20 and the network the caller can access the positiondata of this specific mobile station 20 at the base station 30 or theremotely monitoring center. This function can easily be extended toregular static phone users. A regular static phone user can dial thenumber of a specific mobile station 20 and active the location queryingfunction. Then, the regular static phone user can access the positiondata of this specific mobile station 20 at the base station 30 or theremotely monitoring center through the PSTN.

[0064]FIG. 3 illustrates a regular static phone 50 user accessing theposition of the mobile station 20. The mobile services switching center33 of the base station 30 is connected to the ISDN/PSTN 40 which isconnected to the regular static phone 50. A position register 36 of thebase station 30 is connected to the mobile services switching center 33,which is used for storing position data of mobile stations. Through theISDN/PSTN 40 and the mobile services switching center 33, the regularstatic phone 50 can access the position data at the position register36.

[0065]FIG. 4 shows a mobile station 20-A which accesses the positiondata of another mobile station 20-B. A position data producer 10 isattached to the mobile station 20-A. This mobile station 20-A isconnected to the base station 30 through a wireless communication linkthrough which its position data is transmitted to the base station 30. Amobile station 20-B is also connected to the base station 30 through awireless communication link. Through this wireless communication linkthe mobile station 20-B can access the position data of the mobilestation 20-A.

[0066]FIG. 5 illustrates a mobile station 20-A accessing the positiondata of another mobile station 20-B through ISDN/PSTN 40. The positiondata producer 10 is attached to the mobile station 20-A which is coveredby the base station 30-A. That means the mobile station 20-A has awireless communication link with the base station 30-A. Through thiswireless communication link, the position data of the mobile station20-A is transmitted to the base station 30-A. The mobile station 20-B isconnected to the base station 30-B through a wireless communicationlink. The ISDN/PSTN 40 is connected between the base station 30-A andthe base station 30-B. Through the base station 30-B and the ISDN/PSTN40 the mobile station 20-B can access the position data of the mobilestation 20-A at the base station 30-A.

[0067] As shown in FIG. 6, the regular static phone user 50 can accessthe position of a mobile station 20 at a monitoring center 60. Themobile services switching center 33 of the base station 30 is connectedto the ISDN/PSTN 40 which is connected to the regular static phone 50.The monitoring center 60 is connected to the ISDN/PSTN 40. Through theISDN/PSTN 40, the regular static phone 50 can access the position dataat the monitoring center 60.

[0068]FIG. 7 illustrates a mobile station 20-A which accesses theposition data of another mobile station 20-B at the monitoring center60. The position data producer 10 is attached to the mobile station20-A. This mobile station 20-A is connected to the base station 30through a wireless communication link through which its position data istransmitted to the base station 30. The ISDN/PSTN 40 is connectedbetween the base station 30 and the monitoring center 60. Through theISDN/PSTN 40 the position data of mobile station is sent from basestation 30 to the monitoring center 60. A mobile station 20-B is alsoconnected to the base station 30 through a wireless communication link.Through the base station 30 and the ISDN/PSTN 40 the mobile station 20-Bcan access the position data of the mobile station 20-A at themonitoring center 60.

[0069]FIG. 8 illustrates a mobile station 20-A accessing the positiondata of another mobile station 20-B at the monitoring center 60 throughISDN/PSTN 40. The monitoring center 60 is connected to the ISDN/PSTN 40.The position data producer 10 is attached to the mobile station 20-Awhich has a wireless communication link with the base station 30-A.Through this wireless communication link, the position data of themobile station 20-A is transmitted to the base station 30-A, and thenthrough the ISDN/PSTN 40 sent to the monitoring station 60. The mobilestation 20-B is connected to the base station 30-B through a wirelesscommunication link. The ISDN/PSTN 40 is connected between the basestation 30-A and the base station 30-B. Through the base station 30-Band the ISDN/PSTN 40 the mobile station 20-B can access the positiondata of the mobile station 20-A at the monitoring station 60.

[0070] In view of above, the present invention can substantially achievethe following improvement in arts:

[0071] (1) The cellular phone users can obtain their positions fromtheir cellular phones easily. Moreover, the others may also obtain theexact location of any particular cellular phone user through thecellulose phone system.

[0072] (2) One can obtain another cellular phone user's location fromthe base station of the cellular phone. One can also obtain anothercellular phone user's location by making phone call to that cellularphone.

[0073] (3) No dialing is required to send out the position data. Infact, the position data of the mobile station (cellular handset) isavailable and continuously transmitted via a cellular handset when thehandset is powered on.

[0074] (4) Once the cellular phone of the user is powered on, thecellular phone's position, i.e. the cellular phone user's location, isavailable by sending position data to the base station along with eachlocation updating procedure of that cellular phone. Moreover, thecellular phone users may willfully choose to provide or block theirposition data.

[0075] (5) This method takes advantages of the existing locationupdating procedure in a cellular network system to transmit precisionposition data of a mobile station. It does not need a dialing up totransmit position data. By utilizing this method, the position data ofthe mobile station can be delivered to the base station or cellularnetwork whenever the mobile station is powered on.

What is claimed is:
 1. A method of transmitting position data viacellular communication system, comprising the steps of: (a) generating aposition data by a position data producer equipped with a mobilestation; (b) sending said position data to said mobile station from saidposition data producer; (c) attaching said position data to a locationregistration data stream which is sent by said mobile station to a basestation to inform which area does said mobile station currently residein; (d) sending said position data along with said location registrationdata stream to said base station from said mobile station; and (e)retrieving said position data by said base station.
 2. A method oftransmitting position data via cellular communication system, as recitedin claim 1, wherein said position data producer is selected from a groupconsisting of a global positioning system receiver, an inertialnavigation system, and a GPS/INS integrated system.
 3. A method oftransmitting position data via cellular communication system, as recitedin claim 2, wherein said position data are in geodetic frame includinglatitude and longitude.
 4. A method of transmitting position data viacellular communication system, as recited in claim 2, wherein saidposition data are in ECEF (Earth-Centered-Earth-Fixed) coordinatesystem.
 5. A method of transmitting position data via cellularcommunication system, as recited in claim 1, before step (c), furthercomprising a receiving step of receiving a mobile station country code,a mobile network code, and a location area identity from said basestation, wherein a combination of said mobile station country code, saidmobile network code, and said location area identity gives a servicearea in which said mobile station currently resides.
 6. A method oftransmitting position data via cellular communication system, as recitedin claim 2, before step (c), further comprising a receiving step ofreceiving a mobile station country code, a mobile network code, and alocation area identity from said base station, wherein a combination ofsaid mobile station country code, said mobile network code, and saidlocation area identity gives a service area in which said mobile stationcurrently resides.
 7. A method of transmitting position data viacellular communication system, as recited in claim 1, wherein in step(c), said location registration data stream includes a mobile stationidentification, a mobile station country code, a mobile network code,and a location area identity.
 8. A method of transmitting position datavia cellular communication system, as recited in claim 2, wherein instep (c), said location registration data stream includes said mobilestation identification, said mobile station country code, said mobilenetwork code, and said location area identity.
 9. A method oftransmitting position data via cellular communication system, as recitedin claim 6, wherein in step (c), said location registration data streamincludes said mobile station identification, said mobile station countrycode, said mobile network code, and said location area identity.
 10. Amethod of transmitting position data via cellular communication system,as recited in claim 2, wherein in step (d), said position data is sentalong with said location registration data by said mobile station tosaid base station periodically.
 11. A method of transmitting positiondata via cellular communication system, as recited in claim 9, whereinin step (d), said position data is sent along with said locationregistration data by said mobile station to said base stationperiodically.
 12. A method of transmitting position data via cellularcommunication system, as recited in claim 2, wherein in step (d), saidposition data is sent along with said location registration data by saidmobile station to said base station whenever said mobile station ispowered on.
 13. A method of transmitting position data via cellularcommunication system, as recited in claim 9, wherein in step (d), saidposition data is sent along with said location registration data by saidmobile station to said base station whenever said mobile station ispowered on.
 14. A method of transmitting position data via cellularcommunication system, as recited in claim 2, wherein in step (d), saidposition data is sent along with said location registration data by saidmobile station to said base station when said mobile station detects alocation area change.
 15. A method of transmitting position data viacellular communication system, as recited in claim 9, wherein in step(d), said position data is sent along with said location registrationdata by said mobile station to said base station when said mobilestation detects a location area change.
 16. A method of transmittingposition data via cellular communication system, as recited in claim 2,wherein in step (e), further comprising a step of storing said positiondata in a home location register of a cellular network.
 17. A method oftransmitting position data via cellular communication system, as recitedin claim 9, wherein in step (e), further comprising a step of storingsaid position data in a home location register of a cellular network.18. A method of transmitting position data via cellular communicationsystem, as recited in claim 11, wherein in step (e), further comprisinga step of storing said position data in a home location register of acellular network.
 19. A method of transmitting position data viacellular communication system, as recited in claim 13, wherein in step(e), further comprising a step of storing said position data in a homelocation register of a cellular network.
 20. A method of transmittingposition data via cellular communication system, as recited in claim 15,wherein in step (e), further comprising a step of storing said positiondata in a home location register of a cellular network.
 21. A method oftransmitting position data via cellular communication system, as recitedin claim 17, wherein in step (e), further comprising a step of storingsaid position data in a home location register of a cellular network.22. A method of transmitting position data via cellular communicationsystem, as recited in claim 2, wherein in step (e), further comprising astep of storing said position data in a visitor location register of acellular network.
 23. A method of transmitting position data viacellular communication system, as recited in claim 9, wherein in step(e), further comprising a step of storing said position data in avisitor location register of a cellular network.
 24. A method oftransmitting position data via cellular communication system, as recitedin claim 11, wherein in step (e), further comprising a step of storingsaid position data in a visitor location register of a cellular network.25. A method of transmitting position data via cellular communicationsystem, as recited in claim 13, wherein in step (e), further comprisinga step of storing said position data in a visitor location register of acellular network.
 26. A method of transmitting position data viacellular communication system, as recited in claim 15, wherein in step(e), further comprising a step of storing said position data in avisitor location register of a cellular network.
 27. A method oftransmitting position data via cellular communication system, =asrecited in claim 17, wherein in step (e), further comprising a step ofstoring said position data in a visitor location register of a cellularnetwork.
 28. A method of transmitting position data via cellularcommunication system, as recited in claim 2, wherein after step (e),further comprising a step of sending said position data from said basestation to a remotely monitoring center via an ISDN/PSTN (IntegratedServices Digital Network/Public-Switched Telephone Network).
 29. Amethod of transmitting position data via cellular communication system,as recited in claim 9, wherein after step (e), further comprising a stepof sending said position data from said base station to a remotelymonitoring center via an ISDN/PSTN (Integrated Services DigitalNetwork/Public-Switched Telephone Network).
 30. A method of transmittingposition data via cellular communication system, as recited in claim 2,wherein said position data is attached to a head of said locationregistration data.
 31. A method of transmitting position data viacellular communication system, as recited in claim 9, wherein saidposition data is attached to a head of said location registration data.32. A method of transmitting position data via cellular communicationsystem, as recited in claim 2, wherein said position data is attachedafter an end of said location registration data.
 33. A method oftransmitting position data via cellular communication system, as recitedin claim 5, wherein said position data is attached after said mobilecountry code and before said mobile network code.
 34. A method oftransmitting position data via cellular communication system, as recitedin claim 7, wherein said position data is attached after said mobilecountry code and before said mobile network code.
 35. A method oftransmitting position data via cellular communication system, as recitedin claim 5, wherein said position data is attached after said mobilenetwork code and before said location area identification.
 36. A methodof transmitting position data via cellular communication system, asrecited in claim 7, wherein said position data is attached after saidmobile network code and before said location area identification.